ANALOG THERMOGRAM METHOD .1. CHEMICAL-REA CTIONS WITH SIMPLE ORDER

On the foundation of experimental results of thermokinetics, a general analog thermogram equation, Delta = alpha te(-k beta t) which can sim ulate the thermograms of chemical reactions with simple order, has bee n proposed in this paper. Combined with the basic theory of thermokine tics, a novel studying method of thermokinetics, the analog thermogram method, has been developed, The formulae for calculating kinetic para meter K-n and rate constant k(n), which do not involve any instrument constants, have been derived, The expression of the cooling constant o f thermokinetic system has been obtained at the same time, The analog thermogram method can be applied not only to studying slow chemical re actions, but also to studying faster ones, In order to lest the validi ty of this method, the saponifications of ethyl propionate and ethyl b enzoate in aqueous ethanol solvent, the saponification of ethyl butyra te in aqueous solution, the substitution of benzyl chloride in aqueous DMSO solvent, the formation of hexamethylenetetramine in aqueous solu tion, and the polymerization of acrylamide have been studied, The rate constants calculated with this method are in agreement with those in the literatures, and therefore the analog thermogram method is believe d to be correct.